Cockpit

Cockpits, seats, driver's compartments, and cabins: all exist to provide space for an on-board operator or passenger of a manned vehicle. Transformers who have taken alternate modes based on these manned vehicles have good reason to include a cockpit to ensure perfect disguise. However, there are others who have never imitated a piloted vehicle, who even live on worlds where no suitable pilots have existed since recorded history began, who yet have a place for a driver. How can this be? Only Primus knows the truth.

From Teletraan I: The Transformers Wiki, a Wikia wiki.